ANALYSING DIAGNOSTIC ASSESSMENT ON THE TRIGONOMETRIC RATIOS
Abstract
Abstract: Trigonometry is a challenging subject. Trigonometric ratios serve as foundational material in the learning of advanced trigonometry concepts. This research aims to provide a diagnostic assessment using trigonometric ratios material and evaluate students' preparedness in handling trigonometric function information. This study used the Gravemeijer and Cobb model research design, which consists of three stages: (1) preparatory design, (2) teaching experiment, and (3) retrospective analysis. The research findings indicate that certain students cannot determine the location of the angle, the adjacent side, the opposite side, and the hypotenuse in a right triangle. Additionally, they need help correctly applying the procedure for solving trigonometric ratio problems and cannot articulate their existing knowledge. The model was constructed but needed to accurately represent the trigonometric ratios, resulting in incorrect problem-solving procedures. The majority of students need help need help to successfully handle the problems presented in strategic skills and adaptive communication. Therefore, it is necessary to provide remedial instruction before progressing to the next set of materials.
Keywords; analysing diagnostic, trigonometric ratios, constructed model
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